Universal quinone electrodes for long cycle life aqueous rechargeable batteries
Universal quinone electrodes for long cycle life aqueous rechargeable batteries
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DOI：
10.1038/nmat4919
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发表时间：
2017-08-01
期刊：
影响因子：
41.2
通讯作者：
Yao, Yan
中科院分区：
文献类型：
--
作者：
Liang, Yanliang;Jing, Yan;Yao, Yan
水性可再充电电池提供电网存储和电动车辆操作所需的安全性、稳健性、可负担性和环境友好性，但由于阳极材料的结构和化学不稳定性，它们的采用受到循环寿命差的困扰。在这里，我们报告醌作为稳定的阳极材料，利用其结构稳定的离子配位电荷存储机制和化学惰性对水电解质。在合理选择/设计醌结构后，我们证明了与工业上建立的阴极和电解质结合的三个系统表现出长循环寿命（高达3，000次循环/3，500小时）、快速动力学（>= 20 C）、高阳极比容量（高达200-395 mAh g（-1）），以及现有技术的比能量/能量密度的几个例子（高达76-92 Wh kg（-1）/161-208 Wh l（-1）），对于几个操作pH值（1至15），电荷载体物质（H+、Li+、Na+、K+、Mg 2+）、温度（35至25摄氏度）和气氛（有/没有O-2），使它们成为任何水性电池技术的通用阳极方法。
Aqueous rechargeable batteries provide the safety, robustness, affordability, and environmental friendliness necessary for grid storage and electric vehicle operations, but their adoption is plagued by poor cycle life due to the structural and chemical instability of the anode materials. Here we report quinones as stable anode materials by exploiting their structurally stable ion-coordination charge storage mechanism and chemical inertness towards aqueous electrolytes. Upon rational selection/design of quinone structures, we demonstrate three systems that coupled with industrially established cathodes and electrolytes exhibit long cycle life (up to 3,000 cycles/3,500 h), fast kinetics (>= 20C), high anode specific capacity (up to 200-395 mAh g(-1)), and several examples of state-of-the-art specific energy/energy density (up to 76-92 Wh kg(-1)/161-208 Wh l(-1)) for several operational pH values (1 to 15), charge carrier species (H+, Li+, Na+, K+, Mg2+), temperature (35 to 25 degrees C), and atmosphere (with/without O-2), making them a universal anode approach for any aqueous battery technology.